ARM: mach-shmobile: IRQ driven GPIO key support for Kota2

Now when GPIO IRQs are supported on sh73a0 modify the Kota2
board code to switch from the polled "gpio-keys-polled" driver
to the IRQ driven "gpio-keys" driver.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/arm/mach-shmobile/board-kota2.c

@@ -143,11 +143,10 @@ static struct gpio_keys_button gpio_buttons[] = {
 static struct gpio_keys_platform_data gpio_key_info = {
 	.buttons        = gpio_buttons,
 	.nbuttons       = ARRAY_SIZE(gpio_buttons),
-	.poll_interval  = 250, /* polled for now */
 };
 
 static struct platform_device gpio_keys_device = {
-	.name   = "gpio-keys-polled", /* polled for now */
+	.name   = "gpio-keys",
 	.id     = -1,
 	.dev    = {
 		.platform_data  = &gpio_key_info,